1/* 2 * FFV1 decoder 3 * 4 * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at> 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23/** 24 * @file 25 * FF Video Codec 1 (a lossless codec) decoder 26 */ 27 28#include "libavutil/avassert.h" 29#include "libavutil/crc.h" 30#include "libavutil/opt.h" 31#include "libavutil/imgutils.h" 32#include "libavutil/pixdesc.h" 33#include "avcodec.h" 34#include "codec_internal.h" 35#include "get_bits.h" 36#include "rangecoder.h" 37#include "golomb.h" 38#include "mathops.h" 39#include "ffv1.h" 40#include "thread.h" 41#include "threadframe.h" 42 43static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, 44 int is_signed) 45{ 46 if (get_rac(c, state + 0)) 47 return 0; 48 else { 49 int i, e; 50 unsigned a; 51 e = 0; 52 while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10 53 e++; 54 if (e > 31) 55 return AVERROR_INVALIDDATA; 56 } 57 58 a = 1; 59 for (i = e - 1; i >= 0; i--) 60 a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31 61 62 e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21 63 return (a ^ e) - e; 64 } 65} 66 67static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed) 68{ 69 return get_symbol_inline(c, state, is_signed); 70} 71 72static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state, 73 int bits) 74{ 75 int k, i, v, ret; 76 77 i = state->count; 78 k = 0; 79 while (i < state->error_sum) { // FIXME: optimize 80 k++; 81 i += i; 82 } 83 84 v = get_sr_golomb(gb, k, 12, bits); 85 ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d", 86 v, state->bias, state->error_sum, state->drift, state->count, k); 87 88 v ^= ((2 * state->drift + state->count) >> 31); 89 90 ret = fold(v + state->bias, bits); 91 92 update_vlc_state(state, v); 93 94 return ret; 95} 96 97static int is_input_end(FFV1Context *s) 98{ 99 if (s->ac != AC_GOLOMB_RICE) { 100 RangeCoder *const c = &s->c; 101 if (c->overread > MAX_OVERREAD) 102 return AVERROR_INVALIDDATA; 103 } else { 104 if (get_bits_left(&s->gb) < 1) 105 return AVERROR_INVALIDDATA; 106 } 107 return 0; 108} 109 110#define TYPE int16_t 111#define RENAME(name) name 112#include "ffv1dec_template.c" 113#undef TYPE 114#undef RENAME 115 116#define TYPE int32_t 117#define RENAME(name) name ## 32 118#include "ffv1dec_template.c" 119 120static int decode_plane(FFV1Context *s, uint8_t *src, 121 int w, int h, int stride, int plane_index, 122 int pixel_stride) 123{ 124 int x, y; 125 int16_t *sample[2]; 126 sample[0] = s->sample_buffer + 3; 127 sample[1] = s->sample_buffer + w + 6 + 3; 128 129 s->run_index = 0; 130 131 memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer)); 132 133 for (y = 0; y < h; y++) { 134 int16_t *temp = sample[0]; // FIXME: try a normal buffer 135 136 sample[0] = sample[1]; 137 sample[1] = temp; 138 139 sample[1][-1] = sample[0][0]; 140 sample[0][w] = sample[0][w - 1]; 141 142 if (s->avctx->bits_per_raw_sample <= 8) { 143 int ret = decode_line(s, w, sample, plane_index, 8); 144 if (ret < 0) 145 return ret; 146 for (x = 0; x < w; x++) 147 src[x*pixel_stride + stride * y] = sample[1][x]; 148 } else { 149 int ret = decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); 150 if (ret < 0) 151 return ret; 152 if (s->packed_at_lsb) { 153 for (x = 0; x < w; x++) { 154 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x]; 155 } 156 } else { 157 for (x = 0; x < w; x++) { 158 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample) | ((uint16_t **)sample)[1][x] >> (2 * s->avctx->bits_per_raw_sample - 16); 159 } 160 } 161 } 162 } 163 return 0; 164} 165 166static int decode_slice_header(const FFV1Context *f, FFV1Context *fs) 167{ 168 RangeCoder *c = &fs->c; 169 uint8_t state[CONTEXT_SIZE]; 170 unsigned ps, i, context_count; 171 int sx, sy, sw, sh; 172 173 memset(state, 128, sizeof(state)); 174 sx = get_symbol(c, state, 0); 175 sy = get_symbol(c, state, 0); 176 sw = get_symbol(c, state, 0) + 1U; 177 sh = get_symbol(c, state, 0) + 1U; 178 179 av_assert0(f->version > 2); 180 181 182 if (sx < 0 || sy < 0 || sw <= 0 || sh <= 0) 183 return AVERROR_INVALIDDATA; 184 if (sx > f->num_h_slices - sw || sy > f->num_v_slices - sh) 185 return AVERROR_INVALIDDATA; 186 187 fs->slice_x = sx * (int64_t)f->width / f->num_h_slices; 188 fs->slice_y = sy * (int64_t)f->height / f->num_v_slices; 189 fs->slice_width = (sx + sw) * (int64_t)f->width / f->num_h_slices - fs->slice_x; 190 fs->slice_height = (sy + sh) * (int64_t)f->height / f->num_v_slices - fs->slice_y; 191 192 av_assert0((unsigned)fs->slice_width <= f->width && 193 (unsigned)fs->slice_height <= f->height); 194 av_assert0 ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width <= f->width 195 && (unsigned)fs->slice_y + (uint64_t)fs->slice_height <= f->height); 196 197 if (fs->ac == AC_GOLOMB_RICE && fs->slice_width >= (1<<23)) 198 return AVERROR_INVALIDDATA; 199 200 for (i = 0; i < f->plane_count; i++) { 201 PlaneContext * const p = &fs->plane[i]; 202 int idx = get_symbol(c, state, 0); 203 if (idx >= (unsigned)f->quant_table_count) { 204 av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n"); 205 return -1; 206 } 207 p->quant_table_index = idx; 208 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table)); 209 context_count = f->context_count[idx]; 210 211 if (p->context_count < context_count) { 212 av_freep(&p->state); 213 av_freep(&p->vlc_state); 214 } 215 p->context_count = context_count; 216 } 217 218 ps = get_symbol(c, state, 0); 219 if (ps == 1) { 220 f->cur->interlaced_frame = 1; 221 f->cur->top_field_first = 1; 222 } else if (ps == 2) { 223 f->cur->interlaced_frame = 1; 224 f->cur->top_field_first = 0; 225 } else if (ps == 3) { 226 f->cur->interlaced_frame = 0; 227 } 228 f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0); 229 f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0); 230 231 if (av_image_check_sar(f->width, f->height, 232 f->cur->sample_aspect_ratio) < 0) { 233 av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n", 234 f->cur->sample_aspect_ratio.num, 235 f->cur->sample_aspect_ratio.den); 236 f->cur->sample_aspect_ratio = (AVRational){ 0, 1 }; 237 } 238 239 if (fs->version > 3) { 240 fs->slice_reset_contexts = get_rac(c, state); 241 fs->slice_coding_mode = get_symbol(c, state, 0); 242 if (fs->slice_coding_mode != 1) { 243 fs->slice_rct_by_coef = get_symbol(c, state, 0); 244 fs->slice_rct_ry_coef = get_symbol(c, state, 0); 245 if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) { 246 av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n"); 247 return AVERROR_INVALIDDATA; 248 } 249 } 250 } 251 252 return 0; 253} 254 255static int decode_slice(AVCodecContext *c, void *arg) 256{ 257 FFV1Context *fs = *(void **)arg; 258 FFV1Context *f = fs->avctx->priv_data; 259 int width, height, x, y, ret; 260 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step; 261 AVFrame * const p = f->cur; 262 int i, si; 263 264 for( si=0; fs != f->slice_context[si]; si ++) 265 ; 266 267 if(f->fsrc && !p->key_frame) 268 ff_thread_await_progress(&f->last_picture, si, 0); 269 270 if(f->fsrc && !p->key_frame) { 271 FFV1Context *fssrc = f->fsrc->slice_context[si]; 272 FFV1Context *fsdst = f->slice_context[si]; 273 av_assert1(fsdst->plane_count == fssrc->plane_count); 274 av_assert1(fsdst == fs); 275 276 if (!p->key_frame) 277 fsdst->slice_damaged |= fssrc->slice_damaged; 278 279 for (i = 0; i < f->plane_count; i++) { 280 PlaneContext *psrc = &fssrc->plane[i]; 281 PlaneContext *pdst = &fsdst->plane[i]; 282 283 av_free(pdst->state); 284 av_free(pdst->vlc_state); 285 memcpy(pdst, psrc, sizeof(*pdst)); 286 pdst->state = NULL; 287 pdst->vlc_state = NULL; 288 289 if (fssrc->ac) { 290 pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count); 291 memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count); 292 } else { 293 pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count); 294 memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count); 295 } 296 } 297 } 298 299 fs->slice_rct_by_coef = 1; 300 fs->slice_rct_ry_coef = 1; 301 302 if (f->version > 2) { 303 if (ff_ffv1_init_slice_state(f, fs) < 0) 304 return AVERROR(ENOMEM); 305 if (decode_slice_header(f, fs) < 0) { 306 fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0; 307 fs->slice_damaged = 1; 308 return AVERROR_INVALIDDATA; 309 } 310 } 311 if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0) 312 return ret; 313 if (f->cur->key_frame || fs->slice_reset_contexts) { 314 ff_ffv1_clear_slice_state(f, fs); 315 } else if (fs->slice_damaged) { 316 return AVERROR_INVALIDDATA; 317 } 318 319 width = fs->slice_width; 320 height = fs->slice_height; 321 x = fs->slice_x; 322 y = fs->slice_y; 323 324 if (fs->ac == AC_GOLOMB_RICE) { 325 if (f->version == 3 && f->micro_version > 1 || f->version > 3) 326 get_rac(&fs->c, (uint8_t[]) { 129 }); 327 fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0; 328 init_get_bits(&fs->gb, 329 fs->c.bytestream_start + fs->ac_byte_count, 330 (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8); 331 } 332 333 av_assert1(width && height); 334 if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) { 335 const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift); 336 const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift); 337 const int cx = x >> f->chroma_h_shift; 338 const int cy = y >> f->chroma_v_shift; 339 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1); 340 341 if (f->chroma_planes) { 342 decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1); 343 decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1); 344 } 345 if (fs->transparency) 346 decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 1); 347 } else if (f->colorspace == 0) { 348 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2); 349 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2); 350 } else if (f->use32bit) { 351 uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0], 352 p->data[1] + ps * x + y * p->linesize[1], 353 p->data[2] + ps * x + y * p->linesize[2], 354 p->data[3] + ps * x + y * p->linesize[3] }; 355 decode_rgb_frame32(fs, planes, width, height, p->linesize); 356 } else { 357 uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0], 358 p->data[1] + ps * x + y * p->linesize[1], 359 p->data[2] + ps * x + y * p->linesize[2], 360 p->data[3] + ps * x + y * p->linesize[3] }; 361 decode_rgb_frame(fs, planes, width, height, p->linesize); 362 } 363 if (fs->ac != AC_GOLOMB_RICE && f->version > 2) { 364 int v; 365 get_rac(&fs->c, (uint8_t[]) { 129 }); 366 v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec; 367 if (v) { 368 av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v); 369 fs->slice_damaged = 1; 370 } 371 } 372 373 emms_c(); 374 375 ff_thread_report_progress(&f->picture, si, 0); 376 377 return 0; 378} 379 380static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale) 381{ 382 int v; 383 int i = 0; 384 uint8_t state[CONTEXT_SIZE]; 385 386 memset(state, 128, sizeof(state)); 387 388 for (v = 0; i < 128; v++) { 389 unsigned len = get_symbol(c, state, 0) + 1U; 390 391 if (len > 128 - i || !len) 392 return AVERROR_INVALIDDATA; 393 394 while (len--) { 395 quant_table[i] = scale * v; 396 i++; 397 } 398 } 399 400 for (i = 1; i < 128; i++) 401 quant_table[256 - i] = -quant_table[i]; 402 quant_table[128] = -quant_table[127]; 403 404 return 2 * v - 1; 405} 406 407static int read_quant_tables(RangeCoder *c, 408 int16_t quant_table[MAX_CONTEXT_INPUTS][256]) 409{ 410 int i; 411 int context_count = 1; 412 413 for (i = 0; i < 5; i++) { 414 int ret = read_quant_table(c, quant_table[i], context_count); 415 if (ret < 0) 416 return ret; 417 context_count *= ret; 418 if (context_count > 32768U) { 419 return AVERROR_INVALIDDATA; 420 } 421 } 422 return (context_count + 1) / 2; 423} 424 425static int read_extra_header(FFV1Context *f) 426{ 427 RangeCoder *const c = &f->c; 428 uint8_t state[CONTEXT_SIZE]; 429 int i, j, k, ret; 430 uint8_t state2[32][CONTEXT_SIZE]; 431 unsigned crc = 0; 432 433 memset(state2, 128, sizeof(state2)); 434 memset(state, 128, sizeof(state)); 435 436 ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size); 437 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8); 438 439 f->version = get_symbol(c, state, 0); 440 if (f->version < 2) { 441 av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n"); 442 return AVERROR_INVALIDDATA; 443 } 444 if (f->version > 2) { 445 c->bytestream_end -= 4; 446 f->micro_version = get_symbol(c, state, 0); 447 if (f->micro_version < 0) 448 return AVERROR_INVALIDDATA; 449 } 450 f->ac = get_symbol(c, state, 0); 451 452 if (f->ac == AC_RANGE_CUSTOM_TAB) { 453 for (i = 1; i < 256; i++) 454 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i]; 455 } 456 457 f->colorspace = get_symbol(c, state, 0); //YUV cs type 458 f->avctx->bits_per_raw_sample = get_symbol(c, state, 0); 459 f->chroma_planes = get_rac(c, state); 460 f->chroma_h_shift = get_symbol(c, state, 0); 461 f->chroma_v_shift = get_symbol(c, state, 0); 462 f->transparency = get_rac(c, state); 463 f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency; 464 f->num_h_slices = 1 + get_symbol(c, state, 0); 465 f->num_v_slices = 1 + get_symbol(c, state, 0); 466 467 if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) { 468 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n", 469 f->chroma_h_shift, f->chroma_v_shift); 470 return AVERROR_INVALIDDATA; 471 } 472 473 if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices || 474 f->num_v_slices > (unsigned)f->height || !f->num_v_slices 475 ) { 476 av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n"); 477 return AVERROR_INVALIDDATA; 478 } 479 480 if (f->num_h_slices > MAX_SLICES / f->num_v_slices) { 481 av_log(f->avctx, AV_LOG_ERROR, "slice count unsupported\n"); 482 return AVERROR_PATCHWELCOME; 483 } 484 485 f->quant_table_count = get_symbol(c, state, 0); 486 if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) { 487 av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count); 488 f->quant_table_count = 0; 489 return AVERROR_INVALIDDATA; 490 } 491 492 for (i = 0; i < f->quant_table_count; i++) { 493 f->context_count[i] = read_quant_tables(c, f->quant_tables[i]); 494 if (f->context_count[i] < 0) { 495 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n"); 496 return AVERROR_INVALIDDATA; 497 } 498 } 499 if ((ret = ff_ffv1_allocate_initial_states(f)) < 0) 500 return ret; 501 502 for (i = 0; i < f->quant_table_count; i++) 503 if (get_rac(c, state)) { 504 for (j = 0; j < f->context_count[i]; j++) 505 for (k = 0; k < CONTEXT_SIZE; k++) { 506 int pred = j ? f->initial_states[i][j - 1][k] : 128; 507 f->initial_states[i][j][k] = 508 (pred + get_symbol(c, state2[k], 1)) & 0xFF; 509 } 510 } 511 512 if (f->version > 2) { 513 f->ec = get_symbol(c, state, 0); 514 if (f->micro_version > 2) 515 f->intra = get_symbol(c, state, 0); 516 } 517 518 if (f->version > 2) { 519 unsigned v; 520 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, 521 f->avctx->extradata, f->avctx->extradata_size); 522 if (v || f->avctx->extradata_size < 4) { 523 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v); 524 return AVERROR_INVALIDDATA; 525 } 526 crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4); 527 } 528 529 if (f->avctx->debug & FF_DEBUG_PICT_INFO) 530 av_log(f->avctx, AV_LOG_DEBUG, 531 "global: ver:%d.%d, coder:%d, colorspace: %d bpr:%d chroma:%d(%d:%d), alpha:%d slices:%dx%d qtabs:%d ec:%d intra:%d CRC:0x%08X\n", 532 f->version, f->micro_version, 533 f->ac, 534 f->colorspace, 535 f->avctx->bits_per_raw_sample, 536 f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift, 537 f->transparency, 538 f->num_h_slices, f->num_v_slices, 539 f->quant_table_count, 540 f->ec, 541 f->intra, 542 crc 543 ); 544 return 0; 545} 546 547static int read_header(FFV1Context *f) 548{ 549 uint8_t state[CONTEXT_SIZE]; 550 int i, j, context_count = -1; //-1 to avoid warning 551 RangeCoder *const c = &f->slice_context[0]->c; 552 553 memset(state, 128, sizeof(state)); 554 555 if (f->version < 2) { 556 int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample; 557 unsigned v= get_symbol(c, state, 0); 558 if (v >= 2) { 559 av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v); 560 return AVERROR_INVALIDDATA; 561 } 562 f->version = v; 563 f->ac = get_symbol(c, state, 0); 564 565 if (f->ac == AC_RANGE_CUSTOM_TAB) { 566 for (i = 1; i < 256; i++) { 567 int st = get_symbol(c, state, 1) + c->one_state[i]; 568 if (st < 1 || st > 255) { 569 av_log(f->avctx, AV_LOG_ERROR, "invalid state transition %d\n", st); 570 return AVERROR_INVALIDDATA; 571 } 572 f->state_transition[i] = st; 573 } 574 } 575 576 colorspace = get_symbol(c, state, 0); //YUV cs type 577 bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample; 578 chroma_planes = get_rac(c, state); 579 chroma_h_shift = get_symbol(c, state, 0); 580 chroma_v_shift = get_symbol(c, state, 0); 581 transparency = get_rac(c, state); 582 if (colorspace == 0 && f->avctx->skip_alpha) 583 transparency = 0; 584 585 if (f->plane_count) { 586 if (colorspace != f->colorspace || 587 bits_per_raw_sample != f->avctx->bits_per_raw_sample || 588 chroma_planes != f->chroma_planes || 589 chroma_h_shift != f->chroma_h_shift || 590 chroma_v_shift != f->chroma_v_shift || 591 transparency != f->transparency) { 592 av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n"); 593 return AVERROR_INVALIDDATA; 594 } 595 } 596 597 if (chroma_h_shift > 4U || chroma_v_shift > 4U) { 598 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n", 599 chroma_h_shift, chroma_v_shift); 600 return AVERROR_INVALIDDATA; 601 } 602 603 f->colorspace = colorspace; 604 f->avctx->bits_per_raw_sample = bits_per_raw_sample; 605 f->chroma_planes = chroma_planes; 606 f->chroma_h_shift = chroma_h_shift; 607 f->chroma_v_shift = chroma_v_shift; 608 f->transparency = transparency; 609 610 f->plane_count = 2 + f->transparency; 611 } 612 613 if (f->colorspace == 0) { 614 if (!f->transparency && !f->chroma_planes) { 615 if (f->avctx->bits_per_raw_sample <= 8) 616 f->avctx->pix_fmt = AV_PIX_FMT_GRAY8; 617 else if (f->avctx->bits_per_raw_sample == 9) { 618 f->packed_at_lsb = 1; 619 f->avctx->pix_fmt = AV_PIX_FMT_GRAY9; 620 } else if (f->avctx->bits_per_raw_sample == 10) { 621 f->packed_at_lsb = 1; 622 f->avctx->pix_fmt = AV_PIX_FMT_GRAY10; 623 } else if (f->avctx->bits_per_raw_sample == 12) { 624 f->packed_at_lsb = 1; 625 f->avctx->pix_fmt = AV_PIX_FMT_GRAY12; 626 } else if (f->avctx->bits_per_raw_sample == 16) { 627 f->packed_at_lsb = 1; 628 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16; 629 } else if (f->avctx->bits_per_raw_sample < 16) { 630 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16; 631 } else 632 return AVERROR(ENOSYS); 633 } else if (f->transparency && !f->chroma_planes) { 634 if (f->avctx->bits_per_raw_sample <= 8) 635 f->avctx->pix_fmt = AV_PIX_FMT_YA8; 636 else 637 return AVERROR(ENOSYS); 638 } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) { 639 switch(16 * f->chroma_h_shift + f->chroma_v_shift) { 640 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break; 641 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break; 642 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break; 643 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break; 644 case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break; 645 case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break; 646 } 647 } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) { 648 switch(16*f->chroma_h_shift + f->chroma_v_shift) { 649 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break; 650 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break; 651 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break; 652 } 653 } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) { 654 f->packed_at_lsb = 1; 655 switch(16 * f->chroma_h_shift + f->chroma_v_shift) { 656 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break; 657 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break; 658 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break; 659 } 660 } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) { 661 f->packed_at_lsb = 1; 662 switch(16 * f->chroma_h_shift + f->chroma_v_shift) { 663 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break; 664 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break; 665 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break; 666 } 667 } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) { 668 f->packed_at_lsb = 1; 669 switch(16 * f->chroma_h_shift + f->chroma_v_shift) { 670 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break; 671 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P10; break; 672 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break; 673 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break; 674 } 675 } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) { 676 f->packed_at_lsb = 1; 677 switch(16 * f->chroma_h_shift + f->chroma_v_shift) { 678 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break; 679 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break; 680 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break; 681 } 682 } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) { 683 f->packed_at_lsb = 1; 684 switch(16 * f->chroma_h_shift + f->chroma_v_shift) { 685 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break; 686 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P12; break; 687 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break; 688 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break; 689 } 690 } else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency) { 691 f->packed_at_lsb = 1; 692 switch(16 * f->chroma_h_shift + f->chroma_v_shift) { 693 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P14; break; 694 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P14; break; 695 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P14; break; 696 } 697 } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){ 698 f->packed_at_lsb = 1; 699 switch(16 * f->chroma_h_shift + f->chroma_v_shift) { 700 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break; 701 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break; 702 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break; 703 } 704 } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){ 705 f->packed_at_lsb = 1; 706 switch(16 * f->chroma_h_shift + f->chroma_v_shift) { 707 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break; 708 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break; 709 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break; 710 } 711 } 712 } else if (f->colorspace == 1) { 713 if (f->chroma_h_shift || f->chroma_v_shift) { 714 av_log(f->avctx, AV_LOG_ERROR, 715 "chroma subsampling not supported in this colorspace\n"); 716 return AVERROR(ENOSYS); 717 } 718 if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency) 719 f->avctx->pix_fmt = AV_PIX_FMT_0RGB32; 720 else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) 721 f->avctx->pix_fmt = AV_PIX_FMT_RGB32; 722 else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) 723 f->avctx->pix_fmt = AV_PIX_FMT_GBRP9; 724 else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) 725 f->avctx->pix_fmt = AV_PIX_FMT_GBRP10; 726 else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) 727 f->avctx->pix_fmt = AV_PIX_FMT_GBRAP10; 728 else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) 729 f->avctx->pix_fmt = AV_PIX_FMT_GBRP12; 730 else if (f->avctx->bits_per_raw_sample == 12 && f->transparency) 731 f->avctx->pix_fmt = AV_PIX_FMT_GBRAP12; 732 else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency) 733 f->avctx->pix_fmt = AV_PIX_FMT_GBRP14; 734 else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) { 735 f->avctx->pix_fmt = AV_PIX_FMT_GBRP16; 736 f->use32bit = 1; 737 } 738 else if (f->avctx->bits_per_raw_sample == 16 && f->transparency) { 739 f->avctx->pix_fmt = AV_PIX_FMT_GBRAP16; 740 f->use32bit = 1; 741 } 742 } else { 743 av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n"); 744 return AVERROR(ENOSYS); 745 } 746 if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) { 747 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n"); 748 return AVERROR(ENOSYS); 749 } 750 751 ff_dlog(f->avctx, "%d %d %d\n", 752 f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt); 753 if (f->version < 2) { 754 context_count = read_quant_tables(c, f->quant_table); 755 if (context_count < 0) { 756 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n"); 757 return AVERROR_INVALIDDATA; 758 } 759 f->slice_count = f->max_slice_count; 760 } else if (f->version < 3) { 761 f->slice_count = get_symbol(c, state, 0); 762 } else { 763 const uint8_t *p = c->bytestream_end; 764 for (f->slice_count = 0; 765 f->slice_count < MAX_SLICES && 3 + 5*!!f->ec < p - c->bytestream_start; 766 f->slice_count++) { 767 int trailer = 3 + 5*!!f->ec; 768 int size = AV_RB24(p-trailer); 769 if (size + trailer > p - c->bytestream_start) 770 break; 771 p -= size + trailer; 772 } 773 } 774 if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) { 775 av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count); 776 return AVERROR_INVALIDDATA; 777 } 778 779 for (j = 0; j < f->slice_count; j++) { 780 FFV1Context *fs = f->slice_context[j]; 781 fs->ac = f->ac; 782 fs->packed_at_lsb = f->packed_at_lsb; 783 784 fs->slice_damaged = 0; 785 786 if (f->version == 2) { 787 int sx = get_symbol(c, state, 0); 788 int sy = get_symbol(c, state, 0); 789 int sw = get_symbol(c, state, 0) + 1U; 790 int sh = get_symbol(c, state, 0) + 1U; 791 792 if (sx < 0 || sy < 0 || sw <= 0 || sh <= 0) 793 return AVERROR_INVALIDDATA; 794 if (sx > f->num_h_slices - sw || sy > f->num_v_slices - sh) 795 return AVERROR_INVALIDDATA; 796 797 fs->slice_x = sx * (int64_t)f->width / f->num_h_slices; 798 fs->slice_y = sy * (int64_t)f->height / f->num_v_slices; 799 fs->slice_width = (sx + sw) * (int64_t)f->width / f->num_h_slices - fs->slice_x; 800 fs->slice_height = (sy + sh) * (int64_t)f->height / f->num_v_slices - fs->slice_y; 801 802 av_assert0((unsigned)fs->slice_width <= f->width && 803 (unsigned)fs->slice_height <= f->height); 804 av_assert0 ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width <= f->width 805 && (unsigned)fs->slice_y + (uint64_t)fs->slice_height <= f->height); 806 } 807 808 for (i = 0; i < f->plane_count; i++) { 809 PlaneContext *const p = &fs->plane[i]; 810 811 if (f->version == 2) { 812 int idx = get_symbol(c, state, 0); 813 if (idx >= (unsigned)f->quant_table_count) { 814 av_log(f->avctx, AV_LOG_ERROR, 815 "quant_table_index out of range\n"); 816 return AVERROR_INVALIDDATA; 817 } 818 p->quant_table_index = idx; 819 memcpy(p->quant_table, f->quant_tables[idx], 820 sizeof(p->quant_table)); 821 context_count = f->context_count[idx]; 822 } else { 823 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table)); 824 } 825 826 if (f->version <= 2) { 827 av_assert0(context_count >= 0); 828 if (p->context_count < context_count) { 829 av_freep(&p->state); 830 av_freep(&p->vlc_state); 831 } 832 p->context_count = context_count; 833 } 834 } 835 } 836 return 0; 837} 838 839static av_cold int decode_init(AVCodecContext *avctx) 840{ 841 FFV1Context *f = avctx->priv_data; 842 int ret; 843 844 if ((ret = ff_ffv1_common_init(avctx)) < 0) 845 return ret; 846 847 if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0) 848 return ret; 849 850 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0) 851 return ret; 852 853 return 0; 854} 855 856static int decode_frame(AVCodecContext *avctx, AVFrame *rframe, 857 int *got_frame, AVPacket *avpkt) 858{ 859 uint8_t *buf = avpkt->data; 860 int buf_size = avpkt->size; 861 FFV1Context *f = avctx->priv_data; 862 RangeCoder *const c = &f->slice_context[0]->c; 863 int i, ret; 864 uint8_t keystate = 128; 865 uint8_t *buf_p; 866 AVFrame *p; 867 868 if (f->last_picture.f) 869 ff_thread_release_ext_buffer(avctx, &f->last_picture); 870 FFSWAP(ThreadFrame, f->picture, f->last_picture); 871 872 f->cur = p = f->picture.f; 873 874 if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) { 875 /* we have interlaced material flagged in container */ 876 p->interlaced_frame = 1; 877 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB) 878 p->top_field_first = 1; 879 } 880 881 f->avctx = avctx; 882 ff_init_range_decoder(c, buf, buf_size); 883 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8); 884 885 p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P 886 if (get_rac(c, &keystate)) { 887 p->key_frame = 1; 888 f->key_frame_ok = 0; 889 if ((ret = read_header(f)) < 0) 890 return ret; 891 f->key_frame_ok = 1; 892 } else { 893 if (!f->key_frame_ok) { 894 av_log(avctx, AV_LOG_ERROR, 895 "Cannot decode non-keyframe without valid keyframe\n"); 896 return AVERROR_INVALIDDATA; 897 } 898 p->key_frame = 0; 899 } 900 901 if (f->ac != AC_GOLOMB_RICE) { 902 if (buf_size < avctx->width * avctx->height / (128*8)) 903 return AVERROR_INVALIDDATA; 904 } else { 905 int w = avctx->width; 906 int s = 1 + w / (1<<23); 907 908 w /= s; 909 910 for (i = 0; w > (1<<ff_log2_run[i]); i++) 911 w -= ff_log2_run[i]; 912 if (buf_size < (avctx->height + i + 6) / 8 * s) 913 return AVERROR_INVALIDDATA; 914 } 915 916 ret = ff_thread_get_ext_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF); 917 if (ret < 0) 918 return ret; 919 920 if (avctx->debug & FF_DEBUG_PICT_INFO) 921 av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n", 922 f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample); 923 924 ff_thread_finish_setup(avctx); 925 926 buf_p = buf + buf_size; 927 for (i = f->slice_count - 1; i >= 0; i--) { 928 FFV1Context *fs = f->slice_context[i]; 929 int trailer = 3 + 5*!!f->ec; 930 int v; 931 932 if (i || f->version > 2) { 933 if (trailer > buf_p - buf) v = INT_MAX; 934 else v = AV_RB24(buf_p-trailer) + trailer; 935 } else v = buf_p - c->bytestream_start; 936 if (buf_p - c->bytestream_start < v) { 937 av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n"); 938 ff_thread_report_progress(&f->picture, INT_MAX, 0); 939 return AVERROR_INVALIDDATA; 940 } 941 buf_p -= v; 942 943 if (f->ec) { 944 unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v); 945 if (crc) { 946 int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts; 947 av_log(f->avctx, AV_LOG_ERROR, "slice CRC mismatch %X!", crc); 948 if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) { 949 av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase)); 950 } else if (ts != AV_NOPTS_VALUE) { 951 av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts); 952 } else { 953 av_log(f->avctx, AV_LOG_ERROR, "\n"); 954 } 955 fs->slice_damaged = 1; 956 } 957 if (avctx->debug & FF_DEBUG_PICT_INFO) { 958 av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4)); 959 } 960 } 961 962 if (i) { 963 ff_init_range_decoder(&fs->c, buf_p, v); 964 } else 965 fs->c.bytestream_end = buf_p + v; 966 967 fs->avctx = avctx; 968 } 969 970 avctx->execute(avctx, 971 decode_slice, 972 &f->slice_context[0], 973 NULL, 974 f->slice_count, 975 sizeof(void*)); 976 977 for (i = f->slice_count - 1; i >= 0; i--) { 978 FFV1Context *fs = f->slice_context[i]; 979 int j; 980 if (fs->slice_damaged && f->last_picture.f->data[0]) { 981 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); 982 const uint8_t *src[4]; 983 uint8_t *dst[4]; 984 ff_thread_await_progress(&f->last_picture, INT_MAX, 0); 985 for (j = 0; j < desc->nb_components; j++) { 986 int pixshift = desc->comp[j].depth > 8; 987 int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0; 988 int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0; 989 dst[j] = p->data[j] + p->linesize[j] * 990 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift); 991 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] * 992 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift); 993 994 } 995 if (desc->flags & AV_PIX_FMT_FLAG_PAL) { 996 dst[1] = p->data[1]; 997 src[1] = f->last_picture.f->data[1]; 998 } 999 av_image_copy(dst, p->linesize, src, 1000 f->last_picture.f->linesize, 1001 avctx->pix_fmt, 1002 fs->slice_width, 1003 fs->slice_height); 1004 } 1005 } 1006 ff_thread_report_progress(&f->picture, INT_MAX, 0); 1007 1008 if (f->last_picture.f) 1009 ff_thread_release_ext_buffer(avctx, &f->last_picture); 1010 if ((ret = av_frame_ref(rframe, f->picture.f)) < 0) 1011 return ret; 1012 1013 *got_frame = 1; 1014 1015 return buf_size; 1016} 1017 1018static void copy_fields(FFV1Context *fsdst, const FFV1Context *fssrc, 1019 const FFV1Context *fsrc) 1020{ 1021 fsdst->version = fsrc->version; 1022 fsdst->micro_version = fsrc->micro_version; 1023 fsdst->chroma_planes = fsrc->chroma_planes; 1024 fsdst->chroma_h_shift = fsrc->chroma_h_shift; 1025 fsdst->chroma_v_shift = fsrc->chroma_v_shift; 1026 fsdst->transparency = fsrc->transparency; 1027 fsdst->plane_count = fsrc->plane_count; 1028 fsdst->ac = fsrc->ac; 1029 fsdst->colorspace = fsrc->colorspace; 1030 1031 fsdst->ec = fsrc->ec; 1032 fsdst->intra = fsrc->intra; 1033 fsdst->slice_damaged = fssrc->slice_damaged; 1034 fsdst->key_frame_ok = fsrc->key_frame_ok; 1035 1036 fsdst->packed_at_lsb = fsrc->packed_at_lsb; 1037 fsdst->slice_count = fsrc->slice_count; 1038 if (fsrc->version<3){ 1039 fsdst->slice_x = fssrc->slice_x; 1040 fsdst->slice_y = fssrc->slice_y; 1041 fsdst->slice_width = fssrc->slice_width; 1042 fsdst->slice_height = fssrc->slice_height; 1043 } 1044} 1045 1046#if HAVE_THREADS 1047static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src) 1048{ 1049 FFV1Context *fsrc = src->priv_data; 1050 FFV1Context *fdst = dst->priv_data; 1051 int i, ret; 1052 1053 if (dst == src) 1054 return 0; 1055 1056 { 1057 ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture; 1058 uint8_t (*initial_states[MAX_QUANT_TABLES])[32]; 1059 struct FFV1Context *slice_context[MAX_SLICES]; 1060 memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states)); 1061 memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context)); 1062 1063 memcpy(fdst, fsrc, sizeof(*fdst)); 1064 memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states)); 1065 memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context)); 1066 fdst->picture = picture; 1067 fdst->last_picture = last_picture; 1068 for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) { 1069 FFV1Context *fssrc = fsrc->slice_context[i]; 1070 FFV1Context *fsdst = fdst->slice_context[i]; 1071 copy_fields(fsdst, fssrc, fsrc); 1072 } 1073 av_assert0(!fdst->plane[0].state); 1074 av_assert0(!fdst->sample_buffer); 1075 } 1076 1077 av_assert1(fdst->max_slice_count == fsrc->max_slice_count); 1078 1079 1080 ff_thread_release_ext_buffer(dst, &fdst->picture); 1081 if (fsrc->picture.f->data[0]) { 1082 if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0) 1083 return ret; 1084 } 1085 1086 fdst->fsrc = fsrc; 1087 1088 return 0; 1089} 1090#endif 1091 1092const FFCodec ff_ffv1_decoder = { 1093 .p.name = "ffv1", 1094 .p.long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"), 1095 .p.type = AVMEDIA_TYPE_VIDEO, 1096 .p.id = AV_CODEC_ID_FFV1, 1097 .priv_data_size = sizeof(FFV1Context), 1098 .init = decode_init, 1099 .close = ff_ffv1_close, 1100 FF_CODEC_DECODE_CB(decode_frame), 1101 .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context), 1102 .p.capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ | 1103 AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS, 1104 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP | 1105 FF_CODEC_CAP_ALLOCATE_PROGRESS, 1106}; 1107